| /******************************************************************************* |
| * Copyright (c) 2013, 2016 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Chris McGee (IBM) - Bug 380325 - Release filesystem fragment providing Java 7 NIO2 support |
| * Sergey Prigogin (Google) - Bug 458006 - Fix tests that fail on Mac when filesystem.java7 is used |
| *******************************************************************************/ |
| package org.eclipse.core.internal.filesystem.local.nio; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.*; |
| import org.eclipse.core.filesystem.EFS; |
| import org.eclipse.core.filesystem.IFileInfo; |
| import org.eclipse.core.filesystem.provider.FileInfo; |
| import org.eclipse.core.internal.filesystem.local.NativeHandler; |
| |
| /** |
| * Default implementation of NativeHandler using only Java 7 API's. It can be |
| * used in cases where neither a DOS/Windows nor POSIX file system could be |
| * detected. |
| */ |
| public class DefaultHandler extends NativeHandler { |
| private static final int ATTRIBUTES = EFS.ATTRIBUTE_SYMLINK | EFS.ATTRIBUTE_LINK_TARGET // symbolic link support |
| | EFS.ATTRIBUTE_READ_ONLY | EFS.ATTRIBUTE_EXECUTABLE; // based on Java API |
| |
| @Override |
| public FileInfo fetchFileInfo(String fileName) { |
| Path path = Paths.get(fileName); |
| boolean exists = Files.exists(path); |
| |
| FileInfo info = new FileInfo(); |
| info.setExists(exists); |
| |
| // Even if it doesn't exist then check for symbolic link information. |
| boolean isSymbolicLink = Files.isSymbolicLink(path); |
| if (isSymbolicLink) { |
| info.setAttribute(EFS.ATTRIBUTE_SYMLINK, true); |
| try { |
| info.setStringAttribute(EFS.ATTRIBUTE_LINK_TARGET, Files.readSymbolicLink(path).toString()); |
| } catch (IOException e) { |
| // Leave the target alone. |
| info.setError(IFileInfo.IO_ERROR); |
| } |
| } |
| |
| // Fill in the name of the file. |
| // If the file system is case insensitive, we don't know the real name of the file. |
| // Since obtaining the real name in such situation is pretty expensive, we use the name |
| // passed as a parameter, which may differ by case from the real name of the file |
| // if the file system is case insensitive. |
| info.setName(path.toFile().getName()); |
| |
| // Since we will be using a mixture of pre Java 7 API's which do not support the |
| // retrieval of information for the symbolic link itself instead of the target |
| // we will only support the following details if the symbolic link target exists. |
| if (!exists) |
| return info; |
| |
| try { |
| info.setLastModified(Files.getLastModifiedTime(path).toMillis()); |
| info.setLength(Files.size(path)); |
| info.setDirectory(Files.isDirectory(path)); |
| |
| info.setAttribute(EFS.ATTRIBUTE_READ_ONLY, !Files.isWritable(path) && Files.isReadable(path)); |
| info.setAttribute(EFS.ATTRIBUTE_EXECUTABLE, Files.isExecutable(path)); |
| } catch (IOException e) { |
| // Leave alone and continue. |
| info.setError(IFileInfo.IO_ERROR); |
| } |
| return info; |
| } |
| |
| @Override |
| public int getSupportedAttributes() { |
| return ATTRIBUTES; |
| } |
| |
| @Override |
| public boolean putFileInfo(String fileName, IFileInfo info, int options) { |
| // In all cases we will set the information on the symbolic link target |
| // and not the symbolic link itself. This is consistent with the approach |
| // taken above in fetchInfo. |
| File file = new File(fileName); |
| if (info.getAttribute(EFS.ATTRIBUTE_READ_ONLY)) { |
| if (!file.setReadOnly()) |
| return false; |
| } else { |
| if (!file.setWritable(true)) |
| return false; |
| } |
| // If setExecutable succeeds, then the whole method succeeds. |
| return file.setExecutable(info.getAttribute(EFS.ATTRIBUTE_EXECUTABLE)); |
| } |
| } |